How to Run Mathematica Batch-files in Background ?

Mathematica is a versatile equipment for doing numeric and symbolic computations and it has wide spread applications in all branches of science. Mathematica has a complete consistency to design it at every stage that gives it multilevel capability and helps advanced usage evolve naturally. Mathematica functions work for any precision of number and it can be easily computed with symbols, represented graphically to get the best answer. Mathematica is a robust software development that can be used in any popular operating systems and it can be communicated with external programs by using proper Math-link commands. In this article I illustrate how to create a Mathematica Batch-file from a Mathematica notebook and then how to run this batch file in background. For large computational operations we generally run our programs in background and here I give a detailed description about the way of runningMathematica programs in background for the Unix version only. It can also be possible to run Mathematica for Windows versions by using proper Mathematica batch files which are not described in this article.